Author
Topic: How to check if the oil check valve is stuck CB750 (Read 1974 times)

My oil light wont go out and I'm not sure why. When the engine is running, how much oil should be in the pan? I popped the drain plug while the engine was running to see how much would flow out, but I only got a very small spray. Oil is flowing back up to the tank too. Im just not sure if it's flowing back down. Any thoughts?

My oil light wont go out and I'm not sure why. When the engine is running, how much oil should be in the pan? I popped the drain plug while the engine was running to see how much would flow out, but I only got a very small spray. Oil is flowing back up to the tank too. Im just not sure if it's flowing back down. Any thoughts?

Not much to offer, I just wanted to be notified of posts to your thread.

At any time, running or no, there won't be much oil in the pan. The pump should be pickig it up about as fast as it gets there... I think.

The #1 reason for the oil light staying on is a bad oil light switch. Happened to me. Nevertheless, you have to check it out. If you had a buddy you could swap switches with you'd know. Easy to change out.

Easy to change out if the mag wasnt in the way. I'll try and pop it out. I have another one sitting on the shelf. Not sure if that one works though haha.

And what is this notification of posts that you are talking about? Ohhh Son of a basketweaver. I never noticed the Additional Options. Well isnt that nice.

In addition to the "Additional Options" checkbox, the threads in which I (you) have participated will show up when the link "Show new replies to your posts" is clicked at the top of the page. Gives me a quick list of threads in which I have an interest and to which a new post has been added.

Actually i'm not sure how the Addtl Options checkbox works. I think it throws a notice into your email box, which I don't really want. It may throw a notice into the Forums Messages inbox, I don't know.

I have to remove the pan anyways. The plug stripped the threads out of the pan. It's been like that since I got the engine out of the dirt. There's another question. Can the pan be retapped and put a larger bolt in or what's a good way to fix that.

I wanted the finned F model pan and they are harder to find. I have a pile of other pans here. I'll look for a self tapper. Although once you thread that in, wont there be metal shavings floating about?

Well I dropped the pan, and pulled the oil pump apart. Everything checks out, minus a little leakage on the oil stopper. No biggie there, just makes changing the oil easier. I guess it's gotta be the oil pressure switch.

As for the pan, I retapped the threads to accept the all too common MP 12 drain plug. It's 1/2-20 threads. Took 30 seconds and works like a charm.

I'll get to the oil switch in a little bit. Right now Im trying to figure out why my throttle is sticking up in the electrics housing (harley stuff pshhhh).